I use the amazboost signal booster up at my hunting property, went from no signal to being able to stream tv. My property is about eight miles from the nearest tower, I didn’t think it would work but it did. Got it for $70 on amazon, usually around $120. I put it on an extendable flag pole.
Inside a metal pole building a repeater may not work real well anyway. Its all that metal that blocks the signal. If you put it outside maybe it would work or at least near a window.